Hello!
We are Kakeru Koumuten Co., Ltd., a specialist in roofing, exterior painting, and exterior renovations located in Aoba-ku, Yokohama, Kanagawa Prefecture!
We would like to introduce our achievements in “Exterior Painting and Joint Sealing Work” carried out in Higashi-Kurume City, Tokyo. In this article, you can find details and processes of the exterior renovations provided by Kakeru Koumuten.
Using Kikusui Chemical’s Royal Seraclear paint and Auto Chemical’s Auton Exceed, we enhanced the beauty and durability of the exterior walls. We also provide detailed explanations of the price range and construction period. Please refer to this information for your home’s exterior renovation.
Thank you very much for choosing Kakeru Koumuten!
Construction Data
| Construction Location |
| Tokyo, Higashi-Kurume City |
| Construction Details |
| Temporary scaffolding installation Exterior wall painting work Joint caulking work |
| Background to the Construction |
| After being pointed out by a passing contractor, we received an inquiry regarding concerns about joint cuts and exterior wall deterioration. We proposed replacing the joint sealing material and applying a clear coat to the exterior wall siding. |
| Paint Used |
| Exterior wall: Royal Sera Clear (Clear) Accessory painting: Yumelock Accessories (Color: 15-20b) Eaves: Ken Ace G2 (Color: N90) |
| Price Range |
| 500,000 yen – 1,000,000 yen |
| Construction Period |
| 14 days |
| Completion Month |
| January 2024 |
Exterior Wall Painting Construction Procedure
1. High-Pressure Washing
We thoroughly remove dirt and moss from the exterior walls with high-pressure washing! If any dirt remains, it can affect the adhesion and lifespan of the paint, so we wash carefully. We also provide washing for the exterior and concrete areas as a complimentary service!
2. Protection of Surrounding Areas
Using masking tape, blue sheets, and polymer masks, we protect areas that will not be painted, such as windows, sashes, and floors. This is a very important task in the painting process! If protection is neglected, gaps can form, allowing paint to seep in or resulting in uneven lines.
3. First Coat of Clear Paint

In order to bring out the performance of the paint, it is an important process for achieving a beautiful finish and eliminating uneven application! This time, we will be using clear paint, so unlike regular exterior wall painting, we will only apply the finishing paint twice, and there will be no intermediate coating process.
4. Second Coat of Clear Paint
This will be the finishing of the exterior wall painting. We will consciously work to ensure that there are no uneven spots or missed areas, resulting in a beautiful finish! The paint used is Kikusui Chemical/Royal Clear!
Royal Clear is a clear paint that is compatible with photocatalytic siding (difficult-to-adhere siding).
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For more information on difficult-to-adhere siding, click here!
5. Painting of Auxiliary Parts (Rain Gutter, Eaves, Water Cutting Metal, Shutters)
Rain Gutter
Eaves
Drip Edge Flashing
Storm Shutters
We will thoroughly prepare the base and carefully paint every detail that can be painted!
Please check out other painting project results from here!
Joint Replacement Work Procedure
1. Removal of Existing Sealant
The existing sealing material will be removed using a cutter or similar tool.
This is referred to as sealing, caulking, or joints. It is a critical area that can easily lead to water leaks and cause cracking or lifting of the siding. Cracks and peeling are signs of deterioration!
2. Applying Masking Tape
Check the position to apply the tape and carefully attach it to avoid embedding it into the surface.
3. Applying Primer
Apply the primer with a brush or similar tool, ensuring there are no missed spots.
4. Filling with Sealing Material
Place the nozzle of the caulking gun against the bottom of the joint and fill it sufficiently. The caulking material used is Auto Chemical / Auton Exceed.
Auton Exceed has a durability of about 3 times that of regular caulking materials (urethane, modified silicone, etc.). The expected durability is about 30 years. The cost will be about 50,000 to 100,000 yen higher for a building with a total floor area of 30 tsubo.
5. Finishing with a Spatula
Press firmly with a spatula that matches the width of the joint and finish it smoothly.
6. Removing Masking Tape
Quickly remove the masking tape after finishing. That concludes the process.
We were able to finish beautifully this time as well!
Typically, replacing the joints should be done before exterior wall painting, but in the case of Kikusui Chemical / Royal Ceraclear, it is not allowed to apply paint to the replaced joints, so the joint replacement was done after painting. The process may vary depending on the materials used.
If the exterior wall is siding, it is common to carry out joint replacement and exterior wall painting together, so caution is necessary!
Attractions and Advantages/Disadvantages of Clear Coating
Clear coating is a painting method that not only enhances the beauty and durability of the exterior walls of homes and buildings but also protects them while preserving the original texture of the materials. Especially when you want to maintain the existing material and color of the exterior walls, clear coating is the optimal choice.
Benefits of Clear Coating
Transparency
Since clear coating uses transparent paint, the original materials and colors remain visible after application. This allows for maintaining a beautiful appearance that is almost unchanged from before painting. Clear coating can be said to be a painting method that combines protective functions while enhancing the originality of the exterior walls.
Durability
Clear coating protects the exterior walls from rainwater and ultraviolet rays. This helps extend the lifespan of the exterior walls. Additionally, since clear coating is applied in a thin layer, it minimizes weight increase and reduces the overall burden on the building.
Aesthetic Appeal
Clear coating has a glossy finish that adds dimension to the exterior walls. Furthermore, clear coating prevents color unevenness and achieves a uniform finish. This allows for maintaining a beautiful appearance over a long period.
Drawbacks of Clear Coating
While clear coating has many advantages, there are also some drawbacks.
Drawbacks of Transparency
Because clear coating is transparent, there is a drawback in that the condition of the exterior walls before painting remains visible. If there are scratches or dirt on the exterior walls, they may become noticeable.
Necessity of Exterior Wall Painting and Maintenance Schedule
◇Necessity and Purpose of Exterior Wall Painting
The role of exterior wall painting is primarily to protect the exterior walls. Like the roof, the exterior walls are directly affected by rain, wind, and ultraviolet rays. Regular exterior wall painting helps prevent these damages and plays a role in extending the lifespan of the home.
Additionally, enhancing the beauty of your home is one of the roles of exterior painting. Since the exterior walls determine the first impression of a house, maintaining their beauty increases the comfort of the residents and the evaluation from those around them.
If you want to extend the lifespan of your home and maintain its appearance, exterior painting is necessary.
◇ Exterior Painting Maintenance Schedule
Generally, the lifespan of exterior paint is said to be about 7 to 10 years. However, similar to roofs, this can vary depending on the type of paint used, the painting method, and climate conditions. Inspections are necessary 3 to 5 years after the initial painting to check for signs of deterioration such as fading, peeling, and cracking.
By regularly checking the condition of the exterior walls and performing maintenance as needed, you can protect your valuable home while maintaining its aesthetic appeal.
Kikusui Chemical’s Royal Sera Clear Paint
For clear painting, Kikusui Chemical’s Royal Sera Clear Paint is available. This paint has properties suitable for clear coating and is supported by many professionals.
Royal Sera Clear is a clear paint that can be applied to difficult-to-adhere siding (photocatalytic siding), so if you are unsure whether your home’s siding is difficult-to-adhere, using Royal Sera Clear is a safe choice!
While it is slightly more expensive compared to clear paints from other manufacturers, its durability and adhesion are high, making it the top recommended clear paint by Kakeru Koumuten.
| Exterior Paint | Kikusui Chemical / Royal Sera Clear |
|---|---|
| Exterior Color | Clear![]() |
| Sealing Material |
Auto Chemical / Auton Exceed – Expected Lifespan 30 years
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|---|
Leave your exterior wall painting in Higashi-Kurume City, Tokyo to Kakeru Koumuten Co., Ltd.!
Our company is based in Aoba-ku, Yokohama, and we carry out exterior wall painting and roof renovations mainly in Kanagawa Prefecture and Tokyo. Therefore, we are grateful to receive many construction requests even in Tokyo!
We are happy to assist with exterior wall painting, waterproofing work, and other partial painting projects in Higashi-Kurume City.
“I just want to know the estimate for exterior wall painting,” “I want to know about the paint suitable for my home,” if you have any questions or concerns, please feel free to contact us!
We also have pricing plans for exterior wall painting work available, so please take a look if you’re interested!
・Exterior Wall Painting and Sealing Work Price List
・DIY Painting Plan | For those who want to try painting the roof and exterior walls themselves! We will only set up the scaffolding!
Summary
Above are the results of our exterior wall painting and joint sealing work in Higashi-Kurume City!
Clear coating should be applied while the existing exterior wall is still in good condition; otherwise, cracks and stubborn stains may remain.
For clear coating on siding, it is recommended to apply it around 8 to 12 years after construction!
Estimates and inspections are, of course, free! If you have any concerns regarding roofs, rain gutters, exteriors, or exterior structures, please consult Kakeru Koumuten Co., Ltd. in Aoba-ku, Yokohama!
Kakeru Koumuten is a renovation company strong in exterior renovations, and we carry out complete in-house construction from scaffolding to roofing and exterior wall painting.
We are confident that in terms of “cost, quality, and efficiency,” we do not fall behind compared to other companies!
We are confident in our exterior renovations, so we welcome competitive estimates!
We offer comprehensive construction guarantees and aftercare maintenance, and we have received positive feedback for our cost performance and appropriate proposals that align with our customers’ future life plans!
“I’m glad I asked them!” We take every request seriously to ensure you feel this way.
We look forward to your inquiries. Thank you very much.
Useful information about exterior renovations can be found here!
・Ota Ward, Tokyo | Exterior Painting | Eaves Replacement | Exterior Renovation Completed!
・Ota Ward, Tokyo | Roof Repair | Roof Overlay Using Ridgeway Completed!
・Itabashi Ward, Tokyo | Exterior Painting | Exterior Renovation Completed with Premium Silicon!
・Popular Colors for Exterior Painting! We Introduce Recommended Color Combinations!
・For Those Who Want to Try DIY Exterior Wall and Roof Painting! Scaffolding Only! DIY Plan for Roof and Wall Painting!
・Latest! Subsidies in Kanagawa Prefecture! We Introduce Grants and Reduction Systems!
・Exterior Cleaning Without the Need for Temporary Scaffolding!
・How Much Does Exterior Painting Cost? Are There Tips to Reduce Costs?
・When is the best time for exterior painting? How to determine the optimal timing!
・How to find a contractor for rain gutter repairs! Where should you request rain gutter repairs?
・About the costs of exterior painting | Kakeru Koumuten’s exterior painting plans!
Consultations via LINE are also very welcome◎
AAA is a young company with an average age in the early 20s, but our technology is second to none.
One of our greatest strengths is that we can do all of our own scaffolding, roofing, and painting work. In this industry, where work is generally divided, we are able to provide a complete set of services, which saves time and effort in management and reduces costs. Above all, if there is any trouble, we will come to you right away!
We can confidently declare this. We are the youngest and most friendly renovator in Kanagawa!



